Triodontella nigripennis is a species of beetle of the family Scarabaeidae. It is found in the Democratic Republic of the Congo.
Adults reach a length of about 5 mm. They have an oblong-oval, yellow-red, shiny body, with black elytra. The head is densely punctate. The pronotum is moderately densely punctate and the elytra are seriate-punctate, with the interstices slightly convex and punctate.